Many of us don’t want to spend the hundred bucks to get your vacuum wiper motor
rebuilt properly, so what most of use end up doing is disassembling them (simple enough)
cleaning and wiping some grease around inside. This usually works but usually only for a
short while.
But……..inside the paddle is where the supply of fresh grease is supposed to reside. The
old grease that’s been in the paddle for 50, 60 or 70 years by now is usually dried out or
so thick that it doesn’t flow any more. Simply cleaning off the out side and wiping some
grease around the cylinder and seal like I mentioned will work for a short time but after a
while your motor will loose power, get sluggish or start to stick because the piston runs
dry once the grease has been pushed up into the corners.
http://www.pbase.com/dennygraham/image/141586832/large I have to disagree with the comments that say the window has to be wet or the blade
friction will stop the motor. These motors when they are lubed and are sealing properly
are powerful enough to pull two blades across a dry window. The piston has almost
4sq.in. of surface area. 20in.hg. is almost 10psi which means that it‘s possible for the
piston to pull with a force of almost 40lbs. in either direction.
Now……all I have to do is get the new rivets ordered, find a source for the valve and seal
and I can continue with the experiment.
Denny Graham
Sandwich, IL
